@article{achour,
  author={Mehdi Achour, Friedhelm Betz et. al.},
  institution={The PHP Documentation Group},
  year={1997-2010},
  publisher={http://www.php.net/docs.php}
}

@article{resig,
  author={John Resig, Brandon Aaron et. al.},
  institution={jQuery Project(jQuery Core, jQuery UI, Sizzle and QUnit)},
  year={2010},
  publisher={http://jquery.com}
}

@article{wc,
  title={{The World Wide Web Consortium}},
  institution={W3C (MIT, ERCIM, Keio)},
  year={2010},
  publisher={http://www.w3.org/}
}

@book{piat,
  title={{Análisis y diseño de Aplicaciones Informáticas de Gestión. Una perspectiva de Ingeniería del Software.}},
  author={Piattini, Calvo-Manzano, Cervera},
  year={2003},
  publisher={Ra-Ma}
}
